The following is a list of several reasons for an Internet customer to use CDN services. Which of them is the most important reason?

Question

Options

• ASpeed up website access
• BAchieve national coverage across operators and regions
• CSecuring the Site
• DReduce investment in operation and maintenance, and focus more on business

• A
  79% (27)
• B
  6% (2)
• C
  12% (4)
• D
  3% (1)

Explanation

Speed is the foundational purpose of a CDN: by caching content at distributed edge servers located physically close to end users, a CDN dramatically reduces latency and load times, which is the core reason customers adopt the technology. Option B describes a technical characteristic of how CDNs achieve speed (geographic and operator distribution), not a standalone motivation - it is the mechanism, not the goal. Option C conflates CDN with dedicated security products; while some CDNs offer DDoS mitigation as an add-on, security is a secondary feature, not the defining reason a customer chooses a CDN. Option D addresses cost efficiency, which can be a benefit but is a downstream consequence of offloading traffic, not the primary driver behind adoption.

Memory tip: Think of CDN as "Content Delivered Nearby" - the entire architecture exists to put content closer to the user, making speed the root reason for everything else a CDN does.

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